Re: clef transposition: tenor -> bass

[Kieren Richard MacMillan]

Hi, Roman:

Perhaps the following example will make it clear...

%% CODE BEGINS

\version "2.9.4"
\paper { ragged-right = ##t }

tromboneNotes = \relative c'
{
        c d es f
}

\score
{
        {
                \key c \major
                \clef tenor \tromboneNotes
                \clef bass \tromboneNotes
                \clef treble \tromboneNotes \transpose c fis { \tromboneNotes }
        }
}

%% CODE ENDS

Notice how the notes themselves (captured in the variable named  
"tromboneNotes") are exactly repeated three times, but each time I've  
changed the clef that they are displayed in/with.

Then in the last bar, note how I've kept the clef the same (treble),  
but transposed the notes themselves (up a tritone) -- this is NOT  
what you want to do (I think).

In other words, always enter exactly the notes (i.e., concert  
pitches) you want, and then decide later (i.e., in the score or part)  
which clef to use to display those notes, or whether or not to  
transpose -- Lilypond will just "Do The Right Thing"!  =)

Good luck,
Kieren.